How popular is Conchita?

Conchita is a somewhat popular first name for women (#2347 out of 4276, Top 55%) but a unique last name for both adults and children. (2000 U.S. Census)

Conchita was first listed in 1930-1939 and reached its top rank of #1516 in the U.S. in the 1930s, but is not ranked currently. (Top 2000 Names, 2015)

Which version is better?

with its source form and related girl names. Popular alternative forms of Conchita are Concha, Concetta and Concepcion. These forms of Conchita were popular as birth names during 1920-1929 (usage of 0.04%), but now, the version Concetta has fallen out of fashion.